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<h3 class="post-title">Groovy Goodness: Counting the Items in a List</h3>

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<p>In Groovy we can count how many thimes a specific object is in a list. We use the <code>count()</code> method on the list, iterator or array to achieve this. We must specify one parameter: the object we want to count. Groovy uses the <code>compareTo</code> or <code>equals()</code> method to check for equality.</p>
<pre class="brush:groovy">
def list = [0, 1, 2, 1, 1, 3, 2, 0, 1]

assert 9 == list.size()
assert 2 == list.count(0)
assert 4 == list.count(1)
assert 2 == list.count(2)
assert 1 == list.count(3)
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